Heating and ventilating system



Feb.6, 1940. E MAY 2,189,348

HEATING AND VENTILATING SYSTEM Filed Jan. 6, 1958 4 Sheets-Sheet lINVENTOR. f. Ma

B3, Mm/M ATTORNEY.

Feb. 6, 1940. E. L. MAYO 2,189,348

HEATING AND VENTILATING SYSTEM v Filed Jan. s, 1938 4 Sheets-Sheet 2 'l,0 32 l IL- u ATTORNEY.

1940- E, L. MAYO 89, HEATING AND VENTILATING' SYSTEM Filed Jan. 6, 19584 Sheets-Sheet s INVENTOR.

K BY 5.4. #4 0.

.6 A1 4 Wham/f ATTORNEY.

Feb. 6, 1940.

E.L.MAYO

HEATING AND VENTILATING SYSTEM Filed Jan. 6, 1938 4 Shets-Sheet 4 ATTORNE Y.

, l cles in such manner as to prevent discomfort Mounted on the partiWall 2 y means of the 30 vehicle as an auxiliary air circulating means.delivers air adjacent the radiator H of the heater 30 3.3 to theradiator of the heater whereby a simple Fig. 2 leads forward to theengine radiator I9 35 Patenterl Feb. 6, 1940 i I i I i UNITED STATESPATENT OFFICE 2,189,348 ammo. AND VENTILATING SYSTEM Edward Levy Mayo,Cleveland, Ohio, assignor to The Bishop & Babcock Mfg. Company,Cleveland, Ohio, a corporation of Ohio Application January 6, 1938,Serial No. 183,671

1 Claim. (01. 257-137) This invention relates to an automotive vehi- 66of Fig. 3, parts being broken away to show cle heater adapted tointroduce fresh air into the the construction of the centrifugal fan,most of passenger compartment of motor vehicles, but the conduit beingomitted; Fig. '7 is a view simialso useful for other analogoussituations. lar to Fig. 5 showing a modification of the ple- 5 Theprincipal object of this invention is to pronum chamber; and Fig. Bis afragmentary sec- 5 vide a device which is capable of heating freshtional view on the line 8-8 of Fig. 7.

air introduced into the vehicle from the outside Referring now in detailto the variou pa to the inside of the passenger compartment of thenumeral I indicates a portion of 8- co venthe vehicle and which iscapable at the same tional automobile having the usual partition walltime of. re-circulating the air in the 'compart- 2 dividing the bodyinto passeng r compartment ment for further heating and reheating. 3 andmotor compartment 4. The hood cover It is well known that heatersheretofore have 5 rests on the cowl 6. The cowl 6 supports the not hadsufficient capacity to heat fresh air inwindshield 1 and is providedwith the customary troduced into passenger compartments of vehiowlVentilator openin 8 having a cover to the passengers and it is an objectof this deinlet and outlet pipes l0 and held in place by any vice todeliver to the heater a sufiicient quantity convenient means, in thiscase washers and lock of fresh air to insure the most comfort to thenuts being used, is the heating unit generally passengers and at thesame time recirculate the indicated by the numeral II. It is understoodbody of air already in the passenger compartthat any convenient andsuitable means of sup- 20 ment so as to insure aconstantly moving bodyporting the heating unit may be employed. of air properly heated, to acomfortable degree Communicating with the heater II is a fresh air andmixed with a constant stream of preheated conduit indicated generally bythe numeral l2.

7 fresh air. a In Fig. 1 the duct .extends upwardly and ter- A furtherobject is to provide for thermominates under the cover 9. The duct I2 ispro- 25 static regulation of the amount of fresh air vided with suitablebaflies l3. Immediately admitted to the passenger compartmentresponabove the lower one is a drain l4 and below the sive to thetemparature therein. baflies is a filter I 5. The duct l2 communicates Afurther object is to utilize the motion of the at its lower end witha'plenum chamber 16 which A still further object is to provideeflfective and II. In Fig. 2 he uct leads o an adapter novelmeans forcirculating and recirculating s which is co ct to the plenum chamber theair introduced into the passenger compartit which is, as describedabove, adjacent the face ment and already in the compartment in relationof the radiator I! of the heater II. The duct in and economical deviceis provided for securing of the vehicle and is provided with a filter 20the above object, nd one wh h. ill not get out and adrain 2!. Thevehicle engine is indicated of order. at'22 and has a cooling fan 24suitably attached.

With these and other more limited objects in The plenum chamber It maybe of any de- 40 view, the invention consists in various features siredshape either as shown in Fig. 5 or prefer- 40 of construction andcombination of parts hereably as shown in Figs. 7 and 8, andis attachedinafter described and illustrated in the accomto the housing 36 and isin communication therepar ying drawings in which Fig.1 is a diagramwith.The plenum chamber in Fig. 7 covers matirsview of a fragment of themotor vehicle that part of the radiator II .which is opposite with anair conditioning device according to the the sleeve element 44 on theopposit deof the 5 invention installed; Fig. 2 is a similar diagramradiator and an additional part of the radiator showing another means ofsupplying fresh air beyond the area covered by the sleeve 44. The andshowing the same structure as Fig. 1 in plan; plenum chamber may extendin any direction Fig. 3 is a. central vertical section of the devicefrom the center area opposite the sleeve 44 as shown in Fig. 1, thefresh air duct and most the purpo s of th plenum chamber is to p 50 ofthe vehicle being broken away; Fig. 4 is a vide-a source of fresh air tothe centrifugal type section corresponding substantially to the line fan41 'and the propeller type fan 53 and still 4-4 of Fig. 3; Fig. 5 is asection corresponding permit the propeller type fan 53 to draw airfromsubstantially to the line '5-5 of Fig. 3; Fig. 6 is the passengercompartment for re-circulation.

55 a "section corresponding substantially to the line It is obvious inboth of the embodiments, Figs. 55

1 and 2, that the motion of the car wfll tend to create pressure forcingair through the ducts I! to the heater II and that undesirable moistureis eliminated before the fresh air can reach the heater II and thatfiltering means l5 or 26 prevent the ingress of foreign material such asdust to the passenger compartment. It will be noted that thermostaticelements 3| are interposed between the plenum chamber IG and the airduct l2, or as shown in Fig. 2, they may be placed in the adaptor l8.The thermostatic device operates a closure 32 shown in Fig. 3 which whenin with a radiator I! which is equipped, with water. headers of theusual type through which hot water is circulated by means of inlet andoutlet pipes I0. Adjacent one face of the radiator. I! is the plenumchamber 16 which covers the center portion of the radiator and anadditional portion as shown in Figs. '7 and 8. The radiator is carriedby the outer shell ,38 of the heater. Within the outer shell 35 andcarried by brackets 38a is a housing element 38 which supports a motor39 by means of carrying elements 40 which may be of any suitableconstruction.- The housing 38 entirely surrounds the motor 3! and has acentral opening. which opens toward the radiator H. The motor 39 whichmay be driven either by air or electricity, has attached to its shaft 42a fitting 43 carrying a cup shaped sleeve element 44 providedwithopenings ll for the passage of air. Telescoped with the sleeve element44 is a sheet metal flaring element 4 which carries the rotor 41 of acentrifugal type fan provided with vane elements 48. The motor shaft 42and the elements ll, 46, "and 48 rotate as a unit. The sleeve element llterminates adjacent the radiator I1 and opposite, or in register with,the plenum chamber It.- The housing 38 has a radial outlet 50 whichcommunicates with a fitting ll which carries valve control means I!which may be so constructed as to permit delivery of air to the variousoutlets.

Supported on the sleeve element 44 is a propeller type fan 53 preferablycomprising a sheet metal flange 54 and blades II.

It will now be seen that when the motor ll is running, the air will bedrawn by the rotor 41 operating in the housing 38 through the sleeve 44.This will cause the fresh air to be drawn from the plenum chamber IIthrough the radiator l1 and the air will then be delivered by thecentrifugal fan to the fitting ill and thence to any desired placedepending upon the manipulation of the valve means 52. At the same timethe propeller type fan I! will operate and draw air through the radiatorIl, part of which air will be fresh air drawn from the plenum chamber I8and part of which will be air from the passenger compartment forre-circulation as shown in Piss. 7 and 8. In the case of the deviceshown in the other figures the air will be drawn from the recirculatedair in the passenger compartment only. The outer shell 36 is providedwith a series of outlet louvers which will permit the air drawn in bythe propeller type fan 53 to escape into the passenger compartment. Thepassenger compartment may be provided with an outlet to relieve thepressure in case the compartment is sufliciently air tight to renderthat precaution necessary.

It will be seen from the foregoing that I have described a device whichis well adapted for its intended purpose and while I have shown thepresent preferred embodiments of the invention, it is understood that Iam not limited to the details of the disclosure but only in accordancewith the appended claim.

Having thus described my invention, what I claim is:

In an automobile heater, a radiator, a cen trifugal I an on one side ofsaid radiator, a housing enclosing said centrifugal fan having an inletadjacent one face of said radiator, and a radial outlet, a propeller fanlocated between the centrifugal fan and the radiator, a fresh air ducthaving an outlet adjacent the other side of said radiator opposite saidcentrifugal fan housing inlet and covering an additional portion of saidradiator and a housing enclosing said propeller I fan, saidcentrifugalfan and said radiator.

EDWARD LEVY MAYO.

